{"title":"Askar PHQ","description":"\u003cp\u003eAskar PHQ telescopes are premium flat-field APO astrographs designed for deep-sky astrophotography, sharp stars, and simplified imaging. The PHQ series delivers corrected optics with no separate field flattener required, making these refractors ideal for full-frame cameras, dedicated astronomy cameras, and serious astrophotographers who want clean, high-contrast images with minimal setup. Explore Askar PHQ models including the 65PHQ, 80PHQ, 107PHQ, 130PHQ, and 151PHQ.\u003c\/p\u003e","products":[{"product_id":"askar-107phq-super-apo","title":"Askar 107PHQ Super APO","description":"\u003cdiv align=\"center\" style=\"outline: none; box-sizing: border-box; margin: 0px; padding: 60px 0px 0px; color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei center font-size:=\"\" text-align:=\"\" line-height:=\"\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eAs the first long-focal-ratio Flatfield astrograph from Askar, 107PHQ is born with a special mission: whether you are just getting started in astrophotography, or an enthusiast who has been quite familiar with all equipment and devices, you can always find Askar 107PHQ a useful astrograph which is functionally practical and physically attractive.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eIt's especially amateur or beginner friendly since you don't need to attach an extra field flattener to get a satisfactory picture. And for the fact that you don't need a flattener and you can easily get over back-focus calculation and confusing connection steps, all you need to do is to equip your 107PHQ with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.  Askar 107PHQ, a versatile all-rounder.  Askar 107PHQ can literally be applied in any conceivable situations, and that’s the top reason why 107PHQ is produced: to slash as much trouble for users as possible.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003eThe sleek 107PHQ is assembled with high-quality CNC-machined components and wrapped with smooth coating. The calm and seriousness is offset by the bright green decorative rings or knobs. The 3.4\" rigid focuser is capable of handling a load of 8kg. It’s designed with a long travel distance of 95mm, which is suitable for visual observation. And it's been optimized especially for astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"text-align: center;\"\u003eThe built-in Flatfield lens is a great contribution to Askar 107PHQ’s imaging ability. It supports 44mm full-frame imaging. The stars around the corner of the images seldom suffer from distortion or deformation. At the center of its field of view, the RMS radius is merely 3um. Even a fastidious user can also be satiated when it comes to the shape of stars. Askar 170PHQ can effectively handle with problems of field curvature and vignette.\u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; text-align: center;\"\u003e\u003cspan style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003eThe standard package includes an Askar 107PHQ OTA, a set of four-piece M86-M48 adapters, a pair of tube rings, a 300mm Askar Vixen-style dovetail plate and a high-quality aluminum suitcase.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013742653551,"sku":"107PHQ","price":3334.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1648111037__64264.jpg?v=1766561453"},{"product_id":"askar-80phq-refractive-astrograph","title":"Askar 80PHQ Refractive Astrograph","description":"\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei center font-size:=\"\" text-align:=\"\"\u003eAskar introduces the brand-new 80PHQ refractive astrograph, and it’s the second long-focal-ratio astrograph from the PHQ- family.\u003c\/span\u003e\u003cdiv\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 14px; color: rgb(68, 68, 68);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThe overall finish of 80PHQ is evenly painted. The ivory and flawless coating of the main tube feels comfortably pimply, which can not only increase your grip, preventing the telescope from slipping off from your sweaty hands, but also improve its texture, avoiding the tedious monotony.  \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eA pair of clamshell-style CNC-manufactured black tube rings tightly hold the OTA. So you can just turn two locking screws to loosen or tighten the tube rings simplifying the setup by avoiding the frequent use of small tools like Allen wrenches or socket head screws. \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThe bright green dust cap, handle, locking screws, focusing knob and decorative rings add more energy and vitality to the otherwise deep and profound astrograph. White and green is the classic combination for PHQ series. \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThere is a 3\" rack-and-pinion rigorous focuser on the rear end of the telescope. It’s a smooth focusing unit with dual-speed adjustment. 80PHQ’s rotator is marked with precise graduation which makes your previous subjective adjustment more accurate.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-size: 14px; font-family: ????, \" microsoft yahei color: rgb\u003eThe Askar 80PHQ inherits the optical design of the PHQ- family, adopting a 3+1 quadruplet lens structure which contains two pieces of ED glass that can effectively reduce chromatic aberration and enhance clarity and sharpness. It’s worth mentioning that all astrographs from PHQ- family come with an integrated lens combination rather than simply placing three major lenses and a corrector together in a line. In another word, the whole optical system cannot solely perform without any piece of these lenses. This structure design leads to a more rational lens arrangement, better vignette control and superior image quality. The focal ratio of 80PHQ is f\/7.5. It’s a “long” focal-ratio astrograph compared with other counterparts from Askar. It’s a little bit longer even compared with 107PHQ which is f\/7 in focal ratio.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-size: 14px; font-family: ????, \" microsoft yahei color: rgb\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-family: ????, \" microsoft yahei color: rgb\u003e\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eSome users may be frustrated that it’s hard to make a trade-off between 107PHQ and 80PHQ, since there seems to be so much in common. And especially for those who are new to astrophotography, the complicated designations and confusing numbers are really a major obstacle when they hopefully try to pick out just the proper one from oceans of dazzling products.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eIndeed, 170PHQ and 80PHQ are similar in many aspects partially because they are both the newly-developed refractive astrographs from the same family. However even if they all have excellent mechanical design and sophisticated optical system, there are noticeable differences between these two.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eAt the first glance, Askar 80PHQ is much more compact. 107PHQ is 603mm in length and weighs 5.7kg whereas 80PHQ is 448mm in length and weighs 3.9kg. So if your equatorial mount is not capable of holding heavy telescopes, or if you are quite tired of carrying a bulky long focal-ratio telescope travelling all around, then 80PHQ may be a great option.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eLike 107PHQ, you don't need to calculate the back focus distance within the connection limit. Besides, users don't need to add an extra 1× flattener due to its powerful flatfield optical design, which simplifies the operation.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left; font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\u003c\/span\u003e\u003c\/div\u003e \u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013742981231,"sku":"80PHQ","price":2174.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1648111412__64065.jpg?v=1766561462"},{"product_id":"askar-107phq-130-150-phq-universal-reducer","title":"Askar 107PHQ\/130\/150 PHQ Universal reducer","description":"\u003cspan style=\"color: rgb(68, 68, 68); font-family: Arial; font-size: 14px;\"\u003eAskar’s new-launched 3” 0.7x full-frame reducer adapts for 107PHQ \u0026amp; 130PHQ.  \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size:=\"\"\u003eIt has a triplet design with one ED glass. \u003c\/span\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"outline: none; box-sizing: border-box; margin: 0px; padding: 0px; color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size:\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"outline: none; box-sizing: border-box; margin: 0px; padding: 0px; color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size:\u003eThe 0.7x reduction gives 107PHQ a shortened focal ratio of 4.9 and a shortened focal length of 524mm. This reducer, connected with the astrographs, can  effectively shorten the exposure time and dramatically increase your field of view, bringing more convenience and possibilities for your deep-sky astrophotography.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013794394223,"sku":"107PHQ-Reducer","price":557.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1655171628__85803.jpg?v=1766562978"},{"product_id":"askar-65phq","title":"Askar 65PHQ","description":"\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"font-size: 12pt; color: rgb(68, 68, 68); font-family: Arial;\"\u003e65PHQ has a smaller size than other PHQ astrographs. 65PHQ has a focal ratio of f\/6.4 and a focal length of 416mm. Instead of the quadruplet structure of other PHQs, the 65PHQ is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations. With its self-flattening design, 65PHQ offers strong advantages in the astronomical shooting. It supports the full-frame image circle and has a fine spot diagram with tiny distortions of the peripheral stars.\u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: Arial;\"\u003e\u003cbr style=\"font-size: 12pt;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68);\"\u003e65PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The OTA weighs 2kg, and the full package with tube rings, etc. weighs 2.8kg. The 2.5” rigid focuser comes with a new-type 360° rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; color: rgb(68, 68, 68); text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); text-align: justify;\"\u003e \u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; color: rgb(68, 68, 68); text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); text-align: justify;\"\u003eIt is also a nice choice for your visual observation. With different diagonals and various eyepieces and it can also achieve a perfect focus. It can even be used to observe planets with a super-high magnification eyepiece. The 65PHQ contains a multifunctional handle, a 300mm dovetail plate, and sturdy double tube rings. It is small in size and light in weight, which perfectly caters to your need for viewing and shooting.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013799506031,"sku":"65PHQ","price":1304.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1669614699_252520-_252520Edited__57188.1682636037.1280.1280.jpg?v=1766563134"},{"product_id":"askar-151phq-quadruplet-apo","title":"Askar 151PHQ Quadruplet APO","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar 151PHQ is a premium 151mm f\/7 flatfield quadruplet APO astrograph designed for serious deep-sky imaging and high-end visual observing. With a 1057mm focal length, two ED glass elements, and a self-flattening optical design, it delivers a large corrected field without requiring a separate field flattener for native imaging.\u003c\/p\u003e\n\u003cp\u003eThe 151PHQ is the largest model in Askar’s PHQ series and is built for astrophotographers who want refractor contrast, large-aperture light gathering, and a 60mm image circle for modern large-sensor cameras. Its longer focal length makes it especially useful for galaxies, nebula details, star clusters, and high-resolution deep-sky targets where smaller wide-field refractors may not provide enough scale.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Askar 151PHQ is best for intermediate to advanced astrophotographers, observatory users, and experienced visual observers who have a mount capable of carrying a large refractor. It is a strong choice for users moving beyond small portable refractors and into a more serious imaging platform with a large corrected field and premium mechanical construction.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e151mm aperture provides strong light-gathering performance for deep-sky imaging.\u003c\/li\u003e\n  \u003cli\u003e1057mm focal length offers useful image scale for galaxies, nebula structure, clusters, and smaller targets.\u003c\/li\u003e\n  \u003cli\u003eNative f\/7 focal ratio balances optical correction, contrast, and long-focal-length performance.\u003c\/li\u003e\n  \u003cli\u003eQuadruplet air-spaced APO design includes two ED glass elements for excellent colour correction.\u003c\/li\u003e\n  \u003cli\u003eSelf-flattening design reduces the need for a separate field flattener in native imaging mode.\u003c\/li\u003e\n  \u003cli\u003e60mm image circle supports large imaging sensors, including full-frame and larger-format camera setups.\u003c\/li\u003e\n  \u003cli\u003e3.4-inch rack-and-pinion focuser includes M68, M54, and M48 adapter support, a 360-degree rotator, and a finder base.\u003c\/li\u003e\n  \u003cli\u003eOptional 3-inch 0.7x reducer can bring the system to approximately 740mm at f\/4.9 for faster imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-resolution deep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eGalaxy and nebula detail imaging\u003c\/li\u003e\n  \u003cli\u003eFull-frame and larger-format astronomy camera setups\u003c\/li\u003e\n  \u003cli\u003ePermanent or semi-permanent observatory systems\u003c\/li\u003e\n  \u003cli\u003ePremium refractor-based visual observing\u003c\/li\u003e\n  \u003cli\u003eLonger focal length imaging where a small wide-field refractor is not enough\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe 151PHQ includes a 3.4-inch rack-and-pinion focuser with a 360-degree rotator, finder base, and rear adapter support for M68, M54, and M48 camera connections. The four-piece photographic adapter set steps the rear connection down to M48×0.75 and includes a built-in M48×0.75 filter thread. The optical system supports a 60mm image circle and is well suited to large sensors when paired with appropriate camera adapters.\u003c\/p\u003e\n\u003cp\u003eThe standard package includes the 151PHQ OTA, a pair of tube rings, a handle, an Askar 300mm Losmandy dovetail plate, a set of four photographic adapters, an aluminum case, and a manual. The optional 3-inch 0.7x flatfield reducer is not included, but can be used to reduce the system to approximately 740mm focal length at f\/4.9.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThis is a large refractor; the OTA weighs approximately 11.6kg, and the total weight with tube rings and dovetail is approximately 13.7kg.\u003c\/li\u003e\n  \u003cli\u003eA capable equatorial mount is required. This telescope is not appropriate for light travel mounts or entry-level mounts.\u003c\/li\u003e\n  \u003cli\u003eNative f\/7 imaging is excellent for image scale and correction, but exposure times will be longer than with faster astrographs unless the optional reducer is used.\u003c\/li\u003e\n  \u003cli\u003eThe 3-inch 0.7x reducer is optional and sold separately unless specifically bundled.\u003c\/li\u003e\n  \u003cli\u003eAlthough the native optical design is self-flattening, users still need the correct mechanical adapters, secure camera connection, and accurate focus for best results.\u003c\/li\u003e\n  \u003cli\u003eThis is not the best first telescope for a beginner unless they already have a suitable mount and imaging experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the Askar 151PHQ good for beginners?\u003c\/h3\u003e\n\u003cp\u003eIt is not usually the best first astrophotography telescope. The optics are straightforward to use because the field is corrected natively, but the telescope is large and heavy and needs a capable mount, good balancing, and careful imaging setup.\u003c\/p\u003e\n\u003ch3\u003eWhat is the Askar 151PHQ best used for?\u003c\/h3\u003e\n\u003cp\u003eIt is best used for high-quality deep-sky astrophotography with large sensors, especially when you want more focal length than a compact wide-field refractor can provide.\u003c\/p\u003e\n\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\n\u003cp\u003eIt is primarily an astrograph for imaging, but it can also be used for premium visual observing with the appropriate accessories. Astrophotography is the main reason to choose the 151PHQ.\u003c\/p\u003e\n\u003ch3\u003eDoes it require a separate field flattener?\u003c\/h3\u003e\n\u003cp\u003eNo separate flattener is required for native imaging. The PHQ optical design is self-flattening, which simplifies setup compared with refractors that require a dedicated flattener and strict flattener spacing.\u003c\/p\u003e\n\u003ch3\u003eWhat cameras is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe 60mm image circle makes it suitable for full-frame astronomy cameras and larger-format imaging setups, provided the correct mechanical adapters and spacing are used for the camera system.\u003c\/p\u003e\n\u003ch3\u003eCan it be made faster for imaging?\u003c\/h3\u003e\n\u003cp\u003eYes. The optional 3-inch 0.7x flatfield reducer can reduce the system to approximately 740mm focal length at f\/4.9, which shortens exposure time and provides a wider field of view.\u003c\/p\u003e\n\u003ch3\u003eWhat kind of mount does it need?\u003c\/h3\u003e\n\u003cp\u003eBecause the complete setup with tube rings and dovetail is approximately 13.7kg before adding a camera, guide scope, focuser, and accessories, it should be paired with a mount that has a comfortable imaging payload margin.\u003c\/p\u003e\n\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\n\u003cp\u003eDo not recommend this telescope for lightweight travel rigs, very small mounts, casual grab-and-go observing, or beginners who do not yet have a suitable equatorial mount and imaging workflow.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eOntario Telescope recommends the Askar 151PHQ for astrophotographers who want a premium large-aperture refractor with a long native focal length, flat imaging field, and large sensor support. It solves the problem of getting refractor-quality deep-sky images without adding a separate native field flattener. Choose a smaller PHQ or SQA model if portability, beginner friendliness, or a lighter mount requirement is more important.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following vendor-supplied graphics help show the 151PHQ optical and mechanical layout, native imaging configuration, adapter arrangement, and field performance.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/98c37934-096a-485e-9e5f-3aa0692db920.jpg\" alt=\"Askar 151PHQ optical layout and mechanical diagram for large-format astrophotography\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/307bc671-7fa9-46c6-b166-de2be86ef2b9.jpg\" alt=\"Askar 151PHQ telescope body and adapter diagram for imaging setup\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/b9152fea-5a54-4b65-beaf-6cfc05717813.jpg\" alt=\"Askar 151PHQ rear connection and accessory diagram for camera adapters\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/28082a52-4b55-4374-8169-9ff7b600ac92.jpg\" alt=\"Askar 151PHQ spot diagram and optical performance chart for deep-sky imaging\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014107656303,"sku":"151PHQ","price":6298.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/151phq__21433.png?v=1766571519"},{"product_id":"askar-130phq","title":"Askar 130PHQ","description":"\u003cp class=\"e_text-8 s_title response-transition\"\u003e130PHQ is a long-focal-ratio, flatfield astrograph newly launched after 107PHQ. Instead of buying extra flatteners, calculating the backfocus of flattener or making tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging. 130PHQ has a larger size than 107PHQ, with an aperture 23mm larger than 107PHQ. 130PHQ has a focal ratio of f\/7.7 which is longer than 107PHQ’ s f\/7, and a focal length of 1000mm. The quadruplet lens with two ED glasses offers excellent control of chromatic and other aberrations. With its self-flattening design, 130PHQ offers strong advantages in astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion of the peripheral stars, and its central RMS radius is less than 2 microns.\u003c\/p\u003e\n\u003cdiv id=\"saf-detail-0\" class=\"cbox-15 p_loopItem\"\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix response-transition\"\u003e\n\u003cdiv id=\"ce_detail-275107\" class=\"ce_detail\" data-layout=\"flow\"\u003e\n\u003cdiv id=\"ie_grid-1667527470979\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv id=\"content_ie-1667527470979-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\"\u003e\n\u003cdiv id=\"ie_grid-1667527470984\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1667527470984-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_text-1669603692344\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003e130PHQ comes with a telescopic lens hood, a high quality CNC machined and painted tube and attractive decorative parts. The 3.4\" rigid focuser comes with M68, M54, and M48 adapters and a finder base. When used with the 3\" 0.7 x flat field reducer, the telescope can reach a focal ratio of f\/5.4 and a focal length of 700mm, effectively reducing exposure time. The multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. Standard Losmandy dovetail plate, together with sturdy double tube ring, is perfectly suited for viewing and shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1669603845703\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/93f71e7e-3059-44f2-b166-12284032d9b9.jpg\" alt=\"长友气体\" width=\"100%\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/142b5de7-81b4-4e96-bfdb-f3cdead5f762.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-1\" class=\"cbox-15 p_loopItem\"\u003e \u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014112407663,"sku":"130PHQ","price":5074.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/PHQ130-a__97306.png?v=1766571673"},{"product_id":"askar-80phq-0-76x-full-frame-reducer","title":"Askar 80PHQ 0.76x Full Frame Reducer","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar 80PHQ 0.76x Full Frame Reducer is a dedicated 3-inch reducer designed specifically for the Askar 80PHQ f\/7.5 astrograph. Its triplet optical design reduces the native 80PHQ system by 0.76x, changing the telescope to approximately f\/5.7 with a reduced focal length of 456mm.\u003c\/p\u003e\n\u003cp\u003eThis accessory is built for deep-sky astrophotographers who want a wider field of view and shorter exposure times while keeping the 80PHQ as the core imaging platform.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThis reducer is best for Askar 80PHQ owners who use their telescope primarily for astrophotography. It is especially useful for beginner-to-advanced deep-sky imagers who want to capture larger nebulae, wide star fields, and extended objects with a faster optical system than the native f\/7.5 configuration.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDedicated reducer for the Askar 80PHQ astrograph.\u003c\/li\u003e\n  \u003cli\u003e0.76x reduction changes the 80PHQ from f\/7.5 to approximately f\/5.7.\u003c\/li\u003e\n  \u003cli\u003eReduces focal length to approximately 456mm for a wider imaging field.\u003c\/li\u003e\n  \u003cli\u003eHelps shorten exposure time for deep-sky astrophotography.\u003c\/li\u003e\n  \u003cli\u003eUses a 3-inch triplet reducer design for full-frame imaging support.\u003c\/li\u003e\n  \u003cli\u003eStandard 55mm back focus simplifies camera spacing for common astronomy imaging setups.\u003c\/li\u003e\n  \u003cli\u003eBuilt-in M48x0.75 2-inch filter thread supports convenient filter installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography with the Askar 80PHQ\u003c\/li\u003e\n  \u003cli\u003eLarge nebula and star-field imaging\u003c\/li\u003e\n  \u003cli\u003eFull-frame camera imaging with the 80PHQ\u003c\/li\u003e\n  \u003cli\u003eShorter exposure imaging compared with the native f\/7.5 configuration\u003c\/li\u003e\n  \u003cli\u003ePortable and semi-permanent imaging rigs using the 80PHQ\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThis reducer is designed specifically for the Askar 80PHQ. When used with the 80PHQ f\/7.5 astrograph, it provides a reduced focal ratio of approximately f\/5.7 and a reduced focal length of approximately 456mm. The vendor specifies a standard 55mm back focus, and the reducer includes a built-in M48x0.75 2-inch filter thread.\u003c\/p\u003e\n\u003cp\u003eThe reducer connects through the 80PHQ photographic adapter system at the focuser end. Camera adapters, spacers, filters, filter drawers, and cameras are sold separately unless specifically included in a bundle.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThis is not a standalone imaging lens or telescope.\u003c\/li\u003e\n  \u003cli\u003eIt is designed for the Askar 80PHQ and should not be assumed compatible with other telescopes.\u003c\/li\u003e\n  \u003cli\u003eIt is for astrophotography, not visual observing.\u003c\/li\u003e\n  \u003cli\u003eAccurate 55mm camera-side back focus is required for best field correction.\u003c\/li\u003e\n  \u003cli\u003eIt will not turn the 80PHQ into a high-magnification planetary telescope; it widens the field and speeds up deep-sky imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs this reducer good for beginners?\u003c\/h3\u003e\n\u003cp\u003eYes, if the user already owns an Askar 80PHQ and understands basic camera spacing. The standard 55mm back focus is familiar for many astronomy camera setups, but spacing still needs to be measured carefully.\u003c\/p\u003e\n\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\n\u003cp\u003eIt is best used for wide-field deep-sky astrophotography with the Askar 80PHQ, especially when a faster focal ratio and wider field are preferred.\u003c\/p\u003e\n\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\n\u003cp\u003eThis is an astrophotography accessory. It is not recommended as a visual observing accessory.\u003c\/p\u003e\n\u003ch3\u003eWhat telescope is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eIt is specifically designed for the Askar 80PHQ astrograph.\u003c\/p\u003e\n\u003ch3\u003eWhat camera spacing does it require?\u003c\/h3\u003e\n\u003cp\u003eThe vendor specifies a standard 55mm back focus.\u003c\/p\u003e\n\u003ch3\u003eDoes it accept filters?\u003c\/h3\u003e\n\u003cp\u003eYes. It includes a built-in M48x0.75 2-inch filter thread.\u003c\/p\u003e\n\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\n\u003cp\u003eDo not recommend it to customers who do not own an 80PHQ, need a visual accessory, or want to increase focal length for small targets.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eOntario Telescope recommends the Askar 80PHQ 0.76x Full Frame Reducer for 80PHQ owners who want to make their imaging system faster and wider without changing telescopes. It solves the problem of capturing larger deep-sky targets more efficiently. Choose the native 80PHQ configuration instead when more focal length and smaller image scale are preferred.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following vendor-supplied graphic provides reducer information and specifications for the Askar 80PHQ imaging setup.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/f04d2907-9c73-45de-8f41-c2ca81c0ee90.jpg\" alt=\"Askar 80PHQ 0.76x full frame reducer specifications and imaging configuration diagram\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53156237574255,"sku":"80PHQ Reducer","price":368.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/80PHWREducera.webp?v=1779732870"},{"product_id":"askar-65phq-0-75x-full-frame-reducer","title":"Askar 65PHQ 0.75x Full Frame Reducer","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar 65PHQ 0.75x Full Frame Reducer is a dedicated reducer designed for the Askar 65PHQ astrograph. Its quadruplet optical design reduces the native 65PHQ optical system by 0.75x, changing the telescope to approximately f\/4.8 with a reduced focal length of 312mm.\u003c\/p\u003e\n\u003cp\u003eThis accessory is intended for deep-sky astrophotographers who want a wider field of view, faster imaging speed, and full-frame camera support while continuing to use the 65PHQ as the main telescope.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThis reducer is best for Askar 65PHQ owners who want to make their imaging setup faster and wider. It is suitable for beginner, intermediate, and advanced astrophotographers using the 65PHQ for wide-field nebulae, Milky Way regions, large star fields, and portable deep-sky imaging rigs.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDedicated reducer for the Askar 65PHQ astrograph.\u003c\/li\u003e\n  \u003cli\u003e0.75x reduction changes the 65PHQ from f\/6.4 to approximately f\/4.8.\u003c\/li\u003e\n  \u003cli\u003eReduces focal length to approximately 312mm for a wider field of view.\u003c\/li\u003e\n  \u003cli\u003eQuadruplet reducer design supports full-frame astrophotography.\u003c\/li\u003e\n  \u003cli\u003eStandard 55mm back focus works with many common astronomy camera setups.\u003c\/li\u003e\n  \u003cli\u003eBuilt-in M48x0.75 2-inch filter thread supports convenient filter installation.\u003c\/li\u003e\n  \u003cli\u003eExcellent option for faster imaging of large deep-sky objects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky imaging with the Askar 65PHQ\u003c\/li\u003e\n  \u003cli\u003eLarge nebula and star-field astrophotography\u003c\/li\u003e\n  \u003cli\u003eFull-frame camera imaging with the 65PHQ\u003c\/li\u003e\n  \u003cli\u003ePortable travel imaging rigs\u003c\/li\u003e\n  \u003cli\u003eShorter exposure imaging compared with the native f\/6.4 65PHQ configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThis reducer is designed specifically for the Askar 65PHQ. When installed on the 65PHQ, it provides a reduced focal ratio of approximately f\/4.8 and a reduced focal length of approximately 312mm. The vendor specifies a 55mm back focus and includes a built-in M48x0.75 2-inch filter thread.\u003c\/p\u003e\n\u003cp\u003eUse appropriate camera adapters, spacers, filter drawers, and filters to maintain the required back focus. Cameras, filters, spacers, and the telescope OTA are sold separately unless explicitly included in a bundle.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThis is not a standalone telescope or imaging lens.\u003c\/li\u003e\n  \u003cli\u003eIt is specifically intended for the Askar 65PHQ and should not be assumed compatible with other telescopes.\u003c\/li\u003e\n  \u003cli\u003eIt is an astrophotography accessory, not a visual observing accessory.\u003c\/li\u003e\n  \u003cli\u003eCorrect 55mm back focus is required for best edge performance.\u003c\/li\u003e\n  \u003cli\u003eIt widens the field and reduces focal length, so it is not the right choice when more magnification or smaller-target image scale is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs this reducer good for beginners?\u003c\/h3\u003e\n\u003cp\u003eYes, if the user already owns an Askar 65PHQ and is comfortable setting camera spacing. The 55mm back focus is common, but it still needs to be set accurately.\u003c\/p\u003e\n\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\n\u003cp\u003eIt is best used for wide-field deep-sky astrophotography with the Askar 65PHQ, especially large nebulae, star fields, and travel imaging setups.\u003c\/p\u003e\n\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\n\u003cp\u003eThis is an astrophotography accessory. It is not recommended for visual observing.\u003c\/p\u003e\n\u003ch3\u003eWhat telescope is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eIt is designed for the Askar 65PHQ astrograph.\u003c\/p\u003e\n\u003ch3\u003eWhat camera spacing does it require?\u003c\/h3\u003e\n\u003cp\u003eThe required back focus is 55mm.\u003c\/p\u003e\n\u003ch3\u003eDoes it support full-frame cameras?\u003c\/h3\u003e\n\u003cp\u003eYes. The vendor identifies it as a full-frame reducer for the 65PHQ.\u003c\/p\u003e\n\u003ch3\u003eDoes it accept filters?\u003c\/h3\u003e\n\u003cp\u003eYes. It includes a built-in M48x0.75 2-inch filter thread.\u003c\/p\u003e\n\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\n\u003cp\u003eDo not recommend it to users who do not own a 65PHQ, need a visual accessory, or want to keep the longest possible focal length for smaller objects.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eOntario Telescope recommends the Askar 65PHQ 0.75x Full Frame Reducer for 65PHQ owners who want a faster, wider imaging system for large deep-sky targets. It solves the problem of making the 65PHQ more efficient for wide-field imaging while maintaining a dedicated optical match. Use the native 65PHQ configuration instead when maximum focal length is preferred.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following vendor-supplied graphics provide reducer specifications and optical information for the Askar 65PHQ imaging setup.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/f2def78b-5514-4090-af14-caeb9eab1b02.jpg\" alt=\"Askar 65PHQ 0.75x full frame reducer product and specification diagram\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/53e955bc-f95d-4914-8037-047dbeaa213c.jpg\" alt=\"Askar 65PHQ 0.75x full frame reducer optical diagram and imaging configuration\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53156241211503,"sku":"65PHQ-0.75","price":299.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/65PHQReducer_e6afcfaa-4a05-4d8e-9105-faa469f66206.webp?v=1779732895"}],"url":"https:\/\/ontariotelescope.com\/collections\/askar-phq.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}